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A049368 Number of connected triangle-free planar graphs with n nodes. 0
1, 1, 1, 3, 6, 18, 55, 230, 1063, 6161, 41004 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

CROSSREFS

Sequence in context: A112572 A089325 A110593 * A152733 A173109 A165200

Adjacent sequences:  A049365 A049366 A049367 * A049369 A049370 A049371

KEYWORD

nonn,nice,hard

AUTHOR

Brendan McKay (bdm(AT)cs.anu.edu.au)

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Last modified February 17 16:49 EST 2012. Contains 206058 sequences.